View Compilation Error

0_0_25173283_4680.cpp: In function 'void update(int, int)':
0_0_25173283_4680.cpp:13:58: error: 'struct node' has no member named 'K'
     ans+=(long long)(T[now].cnt*(pre-T[now].cnt))-T[now].K;
                                                          ^
0_0_25173283_4680.cpp: In function 'int main()':
0_0_25173283_4680.cpp:42:16: error: 'struct node' has no member named 'K'
           T[p].K+=num[j][d]-T[p].cnt;
                ^